Invoice Response (IR)

a message which corner 4 (receiver or buyer) issues to corner 1 (sender or seller) in a four-corner model through corners 3 (receiver’s service provider) and corner 2 (sender’s service provider) to update the business processing status of the original document such as invoice, e.g. approved to pay, rejected with cause, or in process. In some cases, corner 3 has a mandated authority to issue business status feedback using an IR on behalf of corner 4.

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